1 files changed, 77 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp4xx/nas100d-pci.c b/arch/arm/mach-ixp4xx/nas100d-pci.c
new file mode 100644
index 000000000000..9bd029462359
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/nas100d-pci.c
@@ -0,0 +1,77 @@
+/*
+ * arch/arm/mach-ixp4xx/nas100d-pci.c
+ *
+ * NAS 100d board-level PCI initialization
+ *
+ * based on ixdp425-pci.c:
+ *      Copyright (C) 2002 Intel Corporation.
+ *      Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * Maintainer: http://www.nslu2-linux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+#include <asm/mach/pci.h>
+#include <asm/mach-types.h>
+
+void __init nas100d_pci_preinit(void)
+{
+        set_irq_type(IRQ_NAS100D_PCI_INTA, IRQT_LOW);
+        set_irq_type(IRQ_NAS100D_PCI_INTB, IRQT_LOW);
+        set_irq_type(IRQ_NAS100D_PCI_INTC, IRQT_LOW);
+        set_irq_type(IRQ_NAS100D_PCI_INTD, IRQT_LOW);
+        set_irq_type(IRQ_NAS100D_PCI_INTE, IRQT_LOW);
+
+        gpio_line_isr_clear(NAS100D_PCI_INTA_PIN);
+        gpio_line_isr_clear(NAS100D_PCI_INTB_PIN);
+        gpio_line_isr_clear(NAS100D_PCI_INTC_PIN);
+        gpio_line_isr_clear(NAS100D_PCI_INTD_PIN);
+        gpio_line_isr_clear(NAS100D_PCI_INTE_PIN);
+
+        ixp4xx_pci_preinit();
+}
+
+static int __init nas100d_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        static int pci_irq_table[NAS100D_PCI_MAX_DEV][NAS100D_PCI_IRQ_LINES] =
+        {
+                { IRQ_NAS100D_PCI_INTA, -1, -1 },
+                { IRQ_NAS100D_PCI_INTB, -1, -1 },
+                { IRQ_NAS100D_PCI_INTC, IRQ_NAS100D_PCI_INTD, IRQ_NAS100D_PCI_INTE },
+        };
+
+        int irq = -1;
+
+        if (slot >= 1 && slot <= NAS100D_PCI_MAX_DEV &&
+                pin >= 1 && pin <= NAS100D_PCI_IRQ_LINES)
+                irq = pci_irq_table[slot-1][pin-1];
+
+        return irq;
+}
+
+struct hw_pci __initdata nas100d_pci = {
+        .nr_controllers = 1,
+        .preinit        = nas100d_pci_preinit,
+        .swizzle        = pci_std_swizzle,
+        .setup          = ixp4xx_setup,
+        .scan           = ixp4xx_scan_bus,
+        .map_irq        = nas100d_map_irq,
+};
+
+int __init nas100d_pci_init(void)
+{
+        if (machine_is_nas100d())
+                pci_common_init(&nas100d_pci);
+
+        return 0;
+}
+
+subsys_initcall(nas100d_pci_init);